op chicago



Feb. 3, 1931. A, TICHAVA 1,790,132

SPRINKLER Filed May 51, 1928 Patented Feb. 3, 1931 nine STATES ARTHUR TICHAVA, OF CHICAGO, ILLINOIS,

ASSIGNOR TO \V. D. ALLEIT MANUFACTUR- ING COMPANY, OF CHICAGO, ILLINOIS, A CORIPOR-A'IION OF ILLINOIS SPRINKLER Application filed May 31,

This invention relates to lawn sprinklers, and has reference more particularly to sprinklers of that type having a rotatable hollow head mounted on and communicating with a discharge nozzle, the head be ng formed with perforations through which the water is forced by internal pressure, and the perforations being so located with reference to the wall of the head as to cause the latter to rotate under internal pressure.

One object of the present invention is to provide an improved form of sprinkler head well adapted to furnish a wide and uniform spray and one wherein the individual jets all issue at varying angles to the axis of the sprinkler head. Another object is to provide a sprinkler head of a form well adapted to serve as a handle for the user when transferring the sprinkler from one position on the lawn to another. Still another object is to prv1de a sprinkler of simple and rugged construction, the parts of which are capable of be1ng made and assembled at low cost.

A practical embodiment of the present invention is illustrated in the accompanying drawing, in which- F 1 is a side elevation;

Fig. 2 is a top plan view;

Fig. 3 is a vertical axial sectlon 1n the plane of the ring-shaped sprinkler head.

Referring to the drawing, designates the threaded end of a hose or pipe through which the water is supplied to the sprinkler, on which is mounted the detachable discharge nozzle the same comprising an 1nternally threaded coupling port1on 11 supplied with the usual annular washer 12, a reduced cylindrical bearing port1on 13 and, bevond said bearing portion, a neck port1on 14-: the bore 13 of the discharge nozzle extending continuously through both the bearing portion 13 and the neck portion 14.

Itotatably mounted on the bearing portion 13 of the discharge nozzle is a threaded bushing 15 that screws into the internally threaded neck 16' of a hollow substantially spherical head 16, and is formed at its lower end with a hexagon flange or nut 15 by which it may be screwed tightly into the 1928. 1 Serial No. 281,641.

neck 16 with the flange or nut 15 abutting against the lower end of the neck.

To confine the bushing 15 on its bearing 13 a collar 17 is mounted on the neck 14, and the upper end portion of the neck, indicated by dotted lines at 18, is swaged down over the collar 17 forming a retaining lip or flange 18. This, of course, is done before the bushing 15 is screwed into the neck 16.

At diametrically opposite points the hollow head 16 is formed with tapped holes 19. by which the head is screwed onto the threaded ends 20 of a hollow sprinkler ring 20; the threads on the two sides being ofopposite pitch. The inlet terminals of the split ring 20 are straight and axially aligned, and the ring and the head are proportioned to permit relative turning thereof so as to enable the screwingof the inlet terminals of the ring 20 into the threaded openings in the head and thus enable the convenient assemblage of these parts. The outer wall of the hollow ring 20 is formed with a plurality of spray perforations 21 that are all located in the central plane of the ring and are disposed substantially radially of the latter. To produce rotation of the ring on the bearing 13 of the discharge nozzle under the internal pressure of the Water, opposite side walls of the ring on opposite sides of the axis of the discharge nozzle are provided with discharge apertures 22 and 23 respectively; the internal pressure on the imperforate walls opposite to the apertured walls causing the ring to rotate on the Well known principle of a reaction wheel. The jets issuing through the perforations 21' are directed in a single plane at various angles to the axis of the discharge nozzle, while the trailing jets issuing through the apertures 22 and 23 issue substantially horizontally in directions approximately tangential to the periphery of the rotating ring. The intersecting jets issuing through the apertures 21, 22 and 23 create a widely difiused and uniform spray well adapted to distribute the water evenly over the entire area of the ground reached by the sprinkler.

In practice it is contemplated that the described sprinkler head will be mounted on a skeleton metal base (not shown), Whereon the member 10 constitutes an upstanding stud or nipple rigidly supporting the discharge nozzle and sprinkler head; and when thus mounted, the annular sprinkler head 20 con stitutes a'very convenient handle by which the sprinkler head and its supporting base can be grasped and bodily transferred from one place to another.

I claim- In a sprinkler of the type described a hollow head having a tubular inlet attaching neck and also provided with diametrically opposite circular outlet openings, the walls of said openings being reversely screw threaded, and an open-ended bearing member on which the attaching neck is rotatably mounted, the outer end of the bearing member being provided with a coupling portion for connection with a supply pipe, and a tubular sprinkler member having perforations arranged to effect rotation of the sprinkler member on the bearing member, said sprinkler member archingover and straddling the hollow head and having reversely screw threaded straight and axially aligned inlet terminals fitted to the respective outlet openings of the hollow head, the sprinkler member and the head being proportioned to permit relative turning thereof to efiect assemblage of said parts.

ARTHUR TICHAVA. 

